Real-valued DS-CDMA sequences

Abstract

Surface acoustic wave devices can be used to implement matched filters in direct-sequence code division multiple access systems, where they can provide the equivalent of over 1 Tflop computation power. In particular, they are naturally able to process long sequences employing real-valued components. In this paper, we describe the derivation of families of real-valued sequences that offer the benefits of improved auto-correlation and cross-correlation performance, while offering a larger number of codes than traditional binary sequences.